What Causes Engine Noise During Cold Start of the Encore?
1 Answers
The reasons for engine noise during cold start of the Encore are as follows: Hydraulic Tappets: Due to low oil pressure or wear in the hydraulic tappets themselves, air enters the hydraulic tappets, causing noise. Valve Clearance: Wear in the valve rocker arms leads to excessive valve clearance. Carbon Canister Solenoid Valve Operation Sound: This is a normal sound and can continue to be used. If the sound is too loud, it is recommended to have it checked at a 4S shop. Three-Way Catalytic Converter: If there is noise within half a minute after a cold start, which then disappears, this is usually the sound of the three-way catalytic converter expanding after heating up.